US presidential hopeful Donald Trump has suggested London Mayor Sadiq Khan would be an exception to his proposed ban on Muslims entering the US.

Mr Trump, the presumptive Republican candidate, was widely criticised when he proposed the temporary ban following the attacks in Paris last year in which 130 people were killed.

Mr Khan, the son of Pakistani immigrants, said he wanted to go to the US, but would have to visit the country before January in case Mr Trump won the November election.

"If Donald Trump becomes the president I'll be stopped from going there by virtue of my faith, which means I can't engage with American mayors and swap ideas," he told Time magazine.

But Mr Trump told The New York Times "there will always be exceptions" when he was asked how his controversial proposal would apply to the newly elected Mayor of London. 
Mr Trump said he was "happy" to see Mr Khan elected, adding: "You lead by example, always lead by example. If he does a good job... that would be a terrific thing."

Mr Khan's victory for Labour ended eight years of Conservative leadership at City Hall, under Boris Johnson.

He received a total of 1,310,143 votes - 57% of the total - compared to Conservative Zac Goldsmith's 994,614, after the capital had its largest ever turnout at 45.6%